Figure 4.
External nasal examination images demonstrate early (A) and late (B) columellar necrosis (arrowheads). The necrosis occurred 10 and 12 days after initiation of nasal continuous positive airway pressure use.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.